Hello,
2009/10/12 <wxu...@sohu.com>:
>
> Hi, everyone, I got the expression,
>
> sin(t)^8 + 4*sin(t)^6*cos(t)^2 + 6*sin(t)^4*cos(t)^4 +
> 4*sin(t)^2*cos(t)^6 + cos(t)^8
> actually it is 1. how can I get it?
Here you go:
sage: t = var('t')
sage: a = sin(t)^8 + 4*sin(t)^6*cos(t)^2 + 6*sin(t)^4*cos(t)^4 +
4*sin(t)^2*cos(t)^6 + cos(t)^8
sage: a.trig_simplify()
1
--Mike
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